A lower bracing type cantilevered scaffold

Abstract

The utility model discloses a kind of lower bracing type cantilevered scaffold, belong to formwork scaffold technical field;The lower bracing type cantilevered scaffold includes cantilever beam, inclined brace and formwork support;It is erected in the outer side of floor slab, floor slab includes intermediate floor slab, last floor slab, next floor slab and structure cantilever;One end of cantilever beam is fixed in the outer facade beam where intermediate floor slab is, and the other end of cantilever beam is fixed with the inclined brace through bottom;The end of inclined brace away from cantilever beam is used to be fixed with the outer facade beam where next floor slab is;The bottom of formwork support is fixed in the upper of cantilever beam, and the top of formwork support is placed in the lower of structure cantilever, and provide support for structure cantilever;Structure cantilever is connected and cantilevered in the extension end of last floor slab, effectively solve the problem that upper portion cannot be effectively pulled and attached when conventional cantilevered scaffold in prior art is cantilevered suddenly in high-rise building.

Description

Technical Field

[0001] This utility model embodiment belongs to the field of formwork scaffolding technology, and particularly relates to a bottom-supported cantilever scaffolding. Background Technology

[0002] As modern high-rise buildings develop towards more complex shapes and more diversified functions, the number of cantilevered and abrupt structural changes on building facades is increasing. Such structures often present discontinuous and irregular spatial forms.

[0003] While traditional ground-supported steel pipe scaffolding can provide stable support, it requires erecting a long support structure from the ground up in cases of abrupt changes in the cantilever of a high-rise building, resulting in significant resource waste and cumbersome installation and dismantling processes. Although traditional cantilevered scaffolding and basket-style cantilevered scaffolding have solved the problems of ground-supported scaffolding, they cannot effectively secure and attach their upper parts when the cantilever of a high-rise building changes abruptly. Utility Model Content

[0004] This utility model provides a bottom-supported cantilever scaffold to solve the problem that traditional cantilever scaffolds in the prior art cannot be effectively tied and attached to the upper part when the cantilever changes abruptly in high-rise buildings.

[0005] The technical solution adopted in this embodiment of the utility model is a cantilevered scaffold with under-bracing, including cantilever beams, diagonal braces and formwork support frames; it is erected on the outside of the floor slab, and the floor slab includes an intermediate floor slab, an upper floor slab, a lower floor slab and a structural cantilever; One end of the cantilever beam is fixed to the exterior beam where the intermediate floor slab is located, and the other end of the cantilever beam is connected to the diagonal brace at the bottom. The end of the diagonal brace furthest from the cantilever beam is used to fix it to the exterior facade beam where the next floor slab is located; The bottom of the formwork support is fixed above the cantilever beam, and the top of the formwork support is placed below the structural cantilever and provides support for the structural cantilever; the structural cantilever is connected to and cantilevered over the extension end of the upper floor slab.

[0006] Furthermore, the under-braced cantilever scaffold also includes an outer protective frame; the outer protective frame is fixed to one end of the cantilever beam near the diagonal brace and is located above the cantilever beam.

[0007] Furthermore, the under-braced cantilever scaffold also includes a fixing plate, which is connected to the end of the cantilever beam near the exterior facade beam.

[0008] Furthermore, the under-braced cantilever scaffold also includes ear plates fitted to the bottom of the cantilever beam, the ear plates being fixed to the end of the cantilever beam away from the exterior facade beam; the ear plates are provided with fixing holes for connecting diagonal braces.

[0009] Furthermore, the under-braced cantilever scaffold also includes a base, which is used to fix the diagonal brace to the exterior beam where the next floor slab is located; The base includes a mounting plate and ear plates; One end of the fixing plate is fixed to the ear plate, and the other end is screwed onto the exterior beam of the next floor slab through the bolt hole; The ear plates on the base have fixing holes for connecting the diagonal braces.

[0010] The beneficial effects of this utility model are as follows: By fixing the cantilever beam to the exterior beam of the intermediate floor slab, and fixing it to the next floor slab at its bottom with diagonal bracing, a formwork support frame is set above it to support the cantilevered structure below. Compared with traditional scaffolding, this technical solution can effectively tie and attach to the upper part of the cantilever, increasing the stability of the scaffolding in the upper area and preventing scaffolding collapse. Attached Figure Description

[0011] Figure 1 This is a structural diagram of the under-supported cantilever scaffolding provided in an embodiment of this utility model.

[0012] Attached reference numerals: 1. Cantilever beam; 2. Diagonal brace; 3. Formwork support; 4. External protective frame; 51. Upper floor slab; 52. Intermediate floor slab; 53. Lower floor slab; 54. Exterior facade beam; 55. Structural cantilever; 6. Ear plate; 61. Fixing hole; 7. Fixing plate; 8. Base; 9. High-strength bolt. Detailed Implementation

[0013] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments. However, this should not be construed as limiting the scope of the present invention to the following embodiments. Rather, these embodiments are for illustrative purposes only and are not intended to limit the scope of the present invention. After reading the teachings of this invention, those skilled in the art can make various alterations or modifications to the present invention, and these equivalent forms also fall within the scope defined by the appended claims.

[0014] This utility model embodiment provides a bottom-supported cantilever scaffold, such as Figure 1 As shown, the under-braced cantilever scaffold is erected on the outside of the floor slab, wherein the floor slab includes at least the middle floor slab 52, the upper floor slab 51, the lower floor slab 53 and the structural cantilever 55.

[0015] The under-braced cantilever scaffolding includes a cantilever beam 1, a diagonal brace 2, and a formwork support 3. One end of the cantilever beam 1 faces the middle floor slab 52 and is fixed to the exterior facade beam 54 where the middle floor slab 52 is located. The other end of the cantilever beam 1 is connected to the diagonal brace 2 through its bottom.

[0016] The diagonal brace 2 is inclined in the vertical direction. The end located below the diagonal brace 2 and away from the cantilever beam 1 is used to be fixed to the exterior beam 54 where the next floor slab 53 is located. The end located above the diagonal brace 2 is fixed to the bottom of the cantilever beam 1.

[0017] The formwork support 3 is set above the cantilever beam 1, and its bottom is fixed to the cantilever beam. The top of the formwork support 3 is placed below the structural cantilever 55 and provides support for the structural cantilever 55. In this embodiment, the structural cantilever 55 is connected to and cantilevered from the extension end of the upper floor slab 51.

[0018] In this embodiment, during construction, the cantilever beam 1 is arranged horizontally, with one end fixed to the exterior beam 54 corresponding to the intermediate floor slab 52. The diagonal brace 2 is installed at an angle, with one end fixed to the bottom of the cantilever beam 1 and the other end fixed to the exterior beam 54 of the next floor slab 53. The angled arrangement of the diagonal brace 2 forms a geometrically stable triangular structure, which, together with the horizontal cantilever beam 1, constitutes a spatial truss system. Compared to traditional vertical support methods, this scheme effectively reduces deflection deformation and significantly improves the structure's resistance to overturning.

[0019] Simultaneously, a formwork support 3 is installed above the cantilever beam 1 to support the portion of the structural cantilever 55 below the cantilever structure. The formwork support 3 connects to the structural cantilever 55, forming a "cantilever-tie" composite system. At the abrupt cantilever sections in high-rise buildings, the formwork support 3 effectively secures and attaches the abrupt cantilever. This technical solution not only enhances the stability of the scaffolding in the upper area but also effectively avoids the risk of scaffolding collapse.

[0020] In this embodiment, an outer protective frame 4 is also included. The outer protective frame 4 is vertically fixed to one end of the cantilever beam 1 near the diagonal brace 2 and is located above the cantilever beam 1. The outer protective frame 4 provides a guarantee for construction safety, effectively preventing personnel and materials from falling from a height. Furthermore, the outer protective frame 4 is located above the cantilever beam and near the diagonal brace, which helps to distribute the load, enhance local stability, and does not affect the function of other components.

[0021] It also includes a fixing plate 7, which is fixed to the end of the cantilever beam 1 near the exterior facade beam 54. In this embodiment, bolts 9 are inserted into the fixing plate 7 and tightened into the exterior facade beam 54 to fix the cantilever beam 1 to the end of the exterior facade beam 54. This fixing method achieves prefabricated installation of the cantilever beam 1 through the standardized connection of the fixing plate 7 and the bolts 9. Compared with the traditional welding process, this method can significantly reduce the complexity of on-site construction. In addition, after adopting the graded fastening technology, the connection node also has the characteristic of independent replacement.

[0022] In addition, it includes a lug plate 6 mounted at the bottom of the cantilever beam 1, which is fixed to the end of the cantilever beam 1 away from the outer facade beam 54. The lug plate 6 has fixing holes 61 for connecting the diagonal brace 2. Through the fixing holes 61, a stable connection between the lug plate 6 and the diagonal brace 2 can be achieved. The fixing holes 61 on the lug plate 6 provide clear positioning and fixing points for the connection between the diagonal brace 2 and the cantilever beam 1, thereby simplifying the installation process, improving construction efficiency, and ensuring the reliability of the connection. At the same time, this connection method allows for flexible adjustment of the angle and position of the diagonal brace 2 according to specific structural and stress requirements, adapting to different engineering scenarios and load conditions, further enhancing the adaptability and versatility of the structure.

[0023] In this embodiment, a base 8 is also provided, which is used to fix the diagonal brace 2 to the exterior beam 54 where the next floor slab 53 is located. Specifically, the base 8 includes a fixing plate 7 and an ear plate 6. One end of the fixing plate 7 is fixed to the ear plate 6, and the other end is tightened to the exterior beam 54 where the next floor slab 53 is located by passing a bolt 9 through a hole. The ear plate 6 on the base 8 has a fixing hole 61 for connecting the diagonal brace 2.

[0024] The base 8 is fixed to the exterior beam 54 via the fixing plate 7 and connected to the diagonal brace 2 via the ear plate 6, forming a stable and reliable connection structure. This method ensures that the diagonal brace 2 is accurately installed and stably bears the load, thus better fulfilling its supporting function. The fixing plate 7 is fixed to the exterior beam 54 by bolts 9 through holes and tightened. This method is not only strong and reliable but also simplifies the connection operation. The base 8, composed of the fixing plate 7 and the ear plate 6, has a simple and clear structure, making it easy to install and adjust.

[0025] In addition, the base 8 can be flexibly adjusted and installed according to actual needs (such as floor height, angle of diagonal brace 2 and position of facade beam 54, etc.), showing strong adaptability and meeting the needs of various building structures.

[0026] In this embodiment, sleeves for bolts 9 are pre-embedded in the exterior beams 54 of the next floor slab 53 and the intermediate floor slab 52. By pre-embedding the sleeves in the exterior beams 54 of the corresponding floor slabs, accurate perforation positions are provided for the bolts 9, enabling quick positioning during installation and allowing the bolts 9 to pass smoothly, greatly improving installation efficiency.

Claims

1. A type of under-braced cantilever scaffold, characterized in that, It includes cantilever beams (1), diagonal braces (2) and formwork supports (3); the under-braced cantilever scaffolding is erected on the outside of the floor slab, the floor slab including the middle floor slab (52), the upper floor slab (51), the lower floor slab (53) and the structural cantilever (55). One end of the cantilever beam (1) is fixed to the exterior beam (54) where the intermediate floor slab (52) is located, and the other end of the cantilever beam (1) is connected to the diagonal brace (2) through the bottom. The end of the diagonal brace (2) away from the cantilever beam (1) is used to fix it to the exterior beam (54) where the next floor slab (53) is located; The bottom of the formwork support (3) is fixed above the cantilever beam (1), and the top of the formwork support (3) is placed below the structural cantilever (55) and provides support for the structural cantilever (55); the structural cantilever (55) is connected to and cantilevered over the extension end of the upper floor slab (51).

2. The under-braced cantilever scaffolding according to claim 1, characterized in that, It also includes an outer protective frame (4); the outer protective frame (4) is fixed to one end of the cantilever beam (1) near the diagonal brace (2) and is located above the cantilever beam (1).

3. The under-braced cantilever scaffolding according to claim 1, characterized in that, It also includes a fixing plate (7) which is connected to the end of the cantilever beam (1) near the exterior beam (54).

4. The under-braced cantilever scaffolding according to claim 3, characterized in that, It also includes a lug plate (6) fitted at the bottom of the cantilever beam (1), the lug plate (6) being fixed to the end of the cantilever beam (1) away from the outer facade beam (54); the lug plate (6) is provided with a fixing hole (61) for connecting the diagonal brace (2).

5. The under-braced cantilever scaffolding according to claim 1, characterized in that, It also includes a base (8) for fixing the diagonal brace (2) to the exterior beam (54) where the next floor slab (53) is located; The base (8) includes a fixing plate (7) and an ear plate (6); One end of the fixing plate (7) is fixed to the ear plate (6), and the other end of the fixing plate (7) is fixed to the exterior beam (54) where the next floor slab (53) is located; The ear plate (6) on the base (8) has a fixing hole (61) for connecting the diagonal brace (2).

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